fixed the alt text in the title

Author: serreaaron

stories/urban-effects.stories.mdx

@@ -4,7 +4,7 @@ name: Urban Footprints in the Sky: How Expanding Cities Alter Weather Patterns
 description: "Urban Effects on Winds, Cloud Formation, and Rainfall"
 media:
   src: ::file ./miamidowntown.jpg
-  alt: Picture of the Miami city skyline.
+  alt: Picture of the Miami city skyline from space.
   author: 
     name: Image courtesy HDR
     url: https://svs.gsfc.nasa.gov/1233